/Engine/Source/Runtime/CoreUObject/Public/UObject/Class.h
Similar toGetStructPathName()but works with nested structs by using just the package name and struct name so a struct path name /Package/Name.Object:Struct will be flattened to /Package/Name.Struct. This function is used only for generating keys for DeferredCppStructOps
[FTopLevelAssetPath](API\Runtime\CoreUObject\UObject\FTopLevelAssetPath) GetFlattenedStructPathName() const